Randall rh200sc g2 series vs Bugera 333? Pls help

i ve got Randall rh200sc g2 series head and Bugera 412H-BK box. And i am not very satisfied with the sound, I play a lot of maiden and i dont think that this is the amp for me. So my friend sells a Bugera 333 head and Marshall 300W box for 450€ and i dont know now what to do. Should i sell Randall rh200sc g2 and buy bugera 333, or it is Randall a better amp and i just dont know how to set settings right for heavy metal Pleas advise me. tnx. Sorry for my english i am from Slovenia